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Method for direct liquefaction of biomass

A biomass, direct technology, applied in chemical instruments and methods, biofuels, biological raw materials, etc., can solve the problems of high residual solid content in light oil, waste liquid substances, affect the yield of liquid substances, etc. Yield, improving yield, reducing the effect of residue solid content

Active Publication Date: 2018-05-29
BEIJING HUASHI UNITED ENERGY TECH & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned technology directly liquefies the biomass raw material into a liquid substance through two steps of hydroconversion step, and after the second hydroconversion step is completed, the residue is separated from the bottom of the reactor. This operation method will bring the following disadvantages: 1) More liquid substances will be entrained in the residue, which wastes the liquid substance and affects the yield of the liquid substance; 2) Part of the residue is suspended in the liquid phase and enters the next process, resulting in the solid content of the residue in the final light oil high

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  • Method for direct liquefaction of biomass

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] The method for direct liquefaction of biomass provided by the embodiments of the present invention comprises the following steps:

[0074] (1) The biomass 1 enters the biomass pretreatment device 2 to be dried and pulverized sequentially to obtain pulverized materials with a particle size of 10 μm, wherein the pulverized materials are wheat straw particles;

[0075] (2) The hydrogenation catalyst raw material 3 enters the hydrogenation catalyst preparation device 4 for loading, and obtains a hydrogenation catalyst (its particle size is 20 μm, and the loading capacity is 15 wt %) loaded with Mo oxide and Ni oxide on the amorphous alumina. , mixing the hydrogenation catalyst, the pulverized material and sulfur in the biomass slurry preparation device 5 at a mass ratio of 3:100:0.3 to obtain the mixed material;

[0076] (3) mixing the mixture with a hydrogen-donating solvent to obtain a biomass slurry with a solid content of 25 wt%, wherein the hydrogen-donating solvent is...

Embodiment 2

[0085] The method for direct liquefaction of biomass provided by the embodiments of the present invention comprises the following steps:

[0086] (1) The biomass 1 enters the biomass pretreatment device 2 to be dried and pulverized sequentially to obtain pulverized materials with a particle size of 100 μm, wherein the pulverized materials are reed straw particles;

[0087] (2) Hydrogenation catalyst raw material 3 enters in hydrogenation catalyst preparation device 4 and carries out loading, obtains the hydrogenation catalyst (its particle size is 100 μ m-150 μ m, and loading capacity is 10wt) that is loaded with W oxide and Ni oxide on the amorphous alumina %), mixing the hydrogenation catalyst, the pulverized material and sulfur in the biomass slurry preparation device 5 in a mass ratio of 1:100:0.4 to obtain a mixed material;

[0088] (3) mixing the mixture with a hydrogen-donating solvent to obtain a biomass slurry with a solid content of 10 wt%, wherein the hydrogen-donat...

Embodiment 3

[0097] The method for direct liquefaction of biomass provided by the embodiments of the present invention comprises the following steps:

[0098] (1) The biomass 1 enters the biomass pretreatment device 2 and is sequentially dried and pulverized to obtain pulverized materials with a particle size of 500 μm, wherein the pulverized materials are reed straw particles;

[0099] (2) The hydrogenation catalyst raw material 3 enters the hydrogenation catalyst preparation device 4 for loading, and obtains a hydrogenation catalyst (its particle size is 100 μm-150 μm, and the load capacity is 25wt) that is loaded with Pd oxide and Ni oxide on the amorphous alumina %), mixing the hydrogenation catalyst, amorphous iron oxide, the pulverized material and sulfur in the biomass slurry preparation device 5 in a mass ratio of 2:2:100:0.3 to obtain the mixed material;

[0100] (3) mixing the mixture with a hydrogen-donating solvent to obtain a biomass slurry with a solid content of 50 wt%, wher...

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Abstract

The invention discloses a method for direct liquefaction of biomass. The method includes the following steps: (1) mixing the biomass, a hydrogenation catalyst and a hydrogen donor solvent to obtain abiomass slurry; (2) performing first liquefaction reaction on the biomass slurry and hydrogen to collect a first reaction product; (3) performing second liquefaction reaction on the first reaction product and hydrogen to collect a second reaction product; (4) performing first gas-liquid separation on the second reaction product at 290 to 460DEG C to collect a first liquid phase and a first gas phase; (5) performing second gas-liquid separation on the first gas phase at 30DEG C to 60DEG C to collect a second liquid phase, and mixing the first liquid phase and the second liquid phase to obtain aliquid phase; (6) performing first distillation on the liquid phase to collect a light fraction and a heavy fraction; and (7) performing second distillation on the heavy fraction to separate distillate oil and residue, wherein the light fraction and the distillate oil are liquefied liquids. The liquid yield obtained by the method is high, and the residual solid content in the liquids is low.

Description

technical field [0001] The invention belongs to the technical field of biomass liquefaction, and in particular relates to a method for directly liquefying biomass. Background technique [0002] In a broad sense, biomass refers to all plants, microorganisms, and animals that feed on plants and microorganisms and their wastes; Straw, trees and other lignocellulose (lignin for short), leftovers from agricultural product processing, agricultural and forestry waste, and livestock manure and waste in the production process of animal husbandry. Common representative biomass includes crops, crop waste, wood, wood waste, and animal manure. Because of its renewability, low pollution, and wide distribution, it has become an important part of renewable energy. Therefore, how to efficiently develop and utilize biomass energy will play a very important role in solving energy and ecological environment problems. positive effect. [0003] At present, the ways to develop and utilize bioma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00C10G1/08C10G1/02
CPCC10G1/006C10G1/02C10G1/065C10G1/083C10G1/086C10G2300/1011C10G2300/4006C10G2300/4012B01D3/10B01D3/143C10G1/002C10G7/00C10G45/00C10G2300/1014C10G2300/42C10G2300/44Y02E50/10Y02P30/20C10B53/02C10G1/00C10G65/02
Inventor 林科李林郭立新崔永君江莉龙
Owner BEIJING HUASHI UNITED ENERGY TECH & DEV
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